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Directions : Identify the word / words described in each item. write your answer before the number.


PHOTONS , DIFFUSION , LASER , CONVEX LENS , REFRACTION


__________ 1. It is a thicker at the middle than at the edges.

__________ 2. Light travels at different speeds through different materials.

__________ 3. It is the scattering of light.

__________ 4. Light is made up of little packets called _____.

__________ 5. it produces an incredibly powerful , concentrated form a light.